/*
*  Copyright (c) 2005-2010, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
*  WSO2 Inc. licenses this file to you under the Apache License,
*  Version 2.0 (the "License"); you may not use this file except
*  in compliance with the License.
*  You may obtain a copy of the License at
*
*    http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.wso2.carbon.registry.ws.api.utils;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.UnsupportedCallbackException;

import org.apache.ws.security.WSPasswordCallback;

public class InMemoryPasswordCallbackHandler implements CallbackHandler{

    private static Map<String, String> keystorePassword = new HashMap<String, String>();
	
	public void handle(Callback[] callbacks) throws IOException,
			UnsupportedCallbackException {

		 for (int i = 0; i < callbacks.length; i++) {

	            if (callbacks[i] instanceof WSPasswordCallback) {
	                WSPasswordCallback pc = (WSPasswordCallback) callbacks[i];
	                String id = pc.getIdentifier();
	                if (keystorePassword.get(id) != null) {
	                    pc.setPassword(keystorePassword.get(id));
	                } else {
	                    throw new UnsupportedCallbackException(callbacks[i], "no password found for " + id);
	                }
	            }

	        }
	}
	
	public static void addUser(String username, String password) {
        keystorePassword.put(username, password);
    }

}
